<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>

    <script>

        // 打印1-100所有的数

        var i = 1 ;
        while(i <= 100) {
            console.log(i) ;
            i++ ;
        }
        document.write(i) ;   // 101

    </script>
    
</body>
</html>